EP 2066137 A1 20090603 - RADIO BASE STATION FOR DEGENERACY OPERATION OF MOBILE COMMUNICATION SYSTEM IN DISASTER AND MOBILE COMMUNICATION SYSTEM
Title (en)
RADIO BASE STATION FOR DEGENERACY OPERATION OF MOBILE COMMUNICATION SYSTEM IN DISASTER AND MOBILE COMMUNICATION SYSTEM
Title (de)
FUNKBASISSTATION FÜR DEGENERATIONSBETRIEB EINES MOBILKOMMUNIKATIONSSYSTEMS WÄHREND EINER KATASTROPHE UND MOBILKOMMUNIKATIONSSYSTEM
Title (fr)
STATION DE BASE RADIO POUR UN FONCTIONNEMENT EN DÉGÉNÉRESCENCE DE SYSTÈME DE COMMUNICATION MOBILE LORS D'UN DÉSASTRE ET SYSTÈME DE COMMUNICATION MOBILE
Publication
Application
Priority
JP 2006319358 W 20060928
Abstract (en)
A mobile communication system prevents the reduction of large communication range even during disasters. A wireless base station includes a communication unit allocates frequency bands and output powers corresponding to distribution areas of wireless terminals, and performs communication with the wireless terminals. The communication unit uses a modulation method with a large number of multiple values to perform communication with wireless terminals in an area with small distribution area in proximity to the center of the cell area, and uses modulation methods with successively smaller numbers of values to perform communication with wireless terminals in larger distribution areas moving toward the peripheral regions of the cell area, and during a disaster, uses a modulation method with the smallest to perform communication over all distribution areas, sets the output power to the lowest value in communication with wireless terminals in an area with small distribution area in proximity to the center of the cell area, and sets the output power so as to increase gradually in communication with wireless terminals in larger distribution areas moving toward the peripheral regions of the cell area.
IPC 1-7
IPC 8 full level
H04W 16/08 (2009.01); H04W 4/90 (2018.01); H04W 16/10 (2009.01); H04W 52/34 (2009.01); H04W 52/36 (2009.01)
CPC (source: EP US)
H04W 16/08 (2013.01 - EP US); H04W 52/367 (2013.01 - EP US); H04W 4/90 (2018.01 - EP US); H04W 16/10 (2013.01 - EP US); H04W 52/343 (2013.01 - EP US); H04W 76/50 (2018.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 2066137 A1 20090603; EP 2066137 A4 20120627; JP 4672774 B2 20110420; JP WO2008038384 A1 20100128; US 2009175224 A1 20090709; WO 2008038384 A1 20080403
DOCDB simple family (application)
EP 06798406 A 20060928; JP 2006319358 W 20060928; JP 2008536263 A 20060928; US 40924109 A 20090323